Results 91 to 100 of about 86,062 (308)

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

open access: yesAdvanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu   +13 more
wiley   +1 more source

利用导波震相分析阿拉斯加俯冲带东端Yakutat地体的洋壳结构特征

open access: yesDizhen xuebao
低速俯冲洋壳附近震源激发的部分地震波被困在低速层内以导波传播,弧前地震台站所记录的导波可用于洋壳结构成像。阿拉斯加俯冲带具有丰富的地震事件且布设了相对密集的永久性地震台站,为利用导波探测洋壳结构提供了天然试验场。本文对区域密集台站记录到的阿拉斯加俯冲带东端Yakutat地体两侧中源地震事件的导波震相传播特征进行了深入分析。结果显示:阿拉斯加俯冲带东端的Yakutat地体范围内,受低速俯冲洋壳影响的导波震相到时延迟随传播距离的增大而增加 ...
Xiaoyu Guan, Yuanze Zhou
doaj   +1 more source

Tissue‐Stimulator Platform for Electrically Stimulating Pancreatic β‐Cells for Long‐Term Functional Regulation

open access: yesAdvanced Functional Materials, EarlyView.
We present a tissue‐stimulator platform for seamless electrode integration with pancreatic tissue, applying uniform electrical stimulation through optimized design with biohybrid 3D printing. Advantageous effects of electrical stimulation on β‐cell function were observed, including enhanced calcium signaling, islet morphology, and maturation.
Jihwan Kim   +7 more
wiley   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

open access: yesAdvanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin   +10 more
wiley   +1 more source

An optically guided atomic fountain [PDF]

open access: yes, 1999
This thesis describes the development of a laser-cooling experiment aimed at efficient transfer of cold atoms over a short distance, for loading into a conservative atom trap.
Davies, Hilary Jane, Davies, H.J.
core  

Layer guided shear horizontally polarized acoustic plate modes

open access: yes, 2002
The theoretical basis describing Love waves propagating on a finite thickness substrate covered by a finite thickness solid layer having a lower shear acoustic speed is considered.
Newton, Michael   +8 more
core   +1 more source

Light‐Actuated Fiber‐Climbing Inchworm Robot Toward Endoluminal Navigation

open access: yesAdvanced Functional Materials, EarlyView.
A kirigami‐inspired soft inchworm robot harnesses optical energy from a customized side‐emitting optical fiber, guaranteeing its propulsion along the fiber body. The wavelength‐selective responsiveness of dye‐functionalized liquid crystal elastomers and the application of temporal illumination patterns enable sequential control of robot components. The
Antonio Lobosco   +6 more
wiley   +1 more source

Glass Optical Guided-Wave Technology

open access: yes, 1985
Recent advances of glass materials and fabrication processes will be reviewed in the field of guided-wave technology. A variety of optical fibers and guided-wave devices are in development by using high-silica and non-silica glasses.
T. Miyashita
core   +1 more source

Editorial: Guided-Wave Optics

open access: yesApplied Sciences, 2017
Guided waves represent a vast class of phenomena in which the propagation of collective excitations in various media is steered in required directions by fixed (or, sometimes, reconfigurable) conduits [...]
Boris A. Malomed
doaj   +1 more source

Wave-guided optical waveguides

open access: yesOptics Express, 2012
This work primarily aims to fabricate and use two photon polymerization (2PP) microstructures capable of being optically manipulated into any arbitrary orientation. We have integrated optical waveguides into the structures and therefore have freestanding waveguides, which can be positioned anywhere in the sample at any orientation using optical traps ...
Palima, D.   +5 more
openaire   +2 more sources

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